Plasma coupled photo-catalysis method and system for removing ethylene in fresh-keeping storehouse of vegetables and fruits

The invention discloses plasma coupled photo-catalysis method and system for removing ethylene in a fresh-keeping storehouse of vegetables and fruits. The method comprises the steps of firstly, generating plasmas by corona discharge to primarily oxidize and degrade ethylene in the fresh-keeping storehouse of vegetables and fruits, and then further oxidizing and degrading the ethylene in the fresh-keeping storehouse of vegetables and fruits by a photocatalyst. The system comprises the fresh-keeping storehouse of vegetables and fruits, a corona discharge plasma coupled photo-catalysis device and a power fan, which are sequentially connected through a gas pipeline in cycle; and a corona discharge plasma reaction unit and a photo-catalysis reaction unit are respectively arranged inside the corona discharge plasma coupled photo-catalysis device. The ethylene in the fresh-keeping storehouse of vegetables and fruits is removed by a method of combining corona discharge plasma coupling and photo-catalysis; the ethylene-containing gas in the fresh-keeping storehouse of vegetables and fruits can be efficiently processed; the concentration of O3 contained in the gas in the fresh-keeping storehouse of vegetables and fruits is effectively reduced; and the ethylene degradation efficiency and the fresh-keeping quality of the vegetables and fruits are greatly improved in comparison with the traditional method.